Add randomly generated redis password for Ray by default

[devin-petersohn]

• Resolves [Ray] Secure Redis ports #108

Signed-off-by: Devin Petersohn devin.petersohn@gmail.com

What do these changes do?

• passes flake8 modin
• passes black --check modin
• signed commit with git commit -s
• Resolves [Ray] Secure Redis ports #108
• tests added and passing

[simon-mo]

So ray use a default password now. It’s just not randomly generated. Do you need it to be random?

[devin-petersohn]

@simon-mo All Ray instances using the same password does not seem to be very secure to me. Is it enough to secure the instance if everyone can see the password here: https://ray.readthedocs.io/en/latest/package-ref.html#ray.init?

[simon-mo]

Yeah the ray approach only prevent port scanning attack (given that attacker doesn’t know the user is running ray).